Casio GA110-1B men's G-Shock Extra Large world time alarm watch carries a case diameter of 55mm and a case thickness of 17mm. Featured on this model is a fixed bezel, textured function pushers. The caseback on the Casio GA110-1B is with four screws, maintaining the 200 meters water resistance. The strap is crafted in black resin and is secured using a buckle clasp. This dive watch has a silver dial with indexes hour markers. Casio GA110-1B equipped with magnetic resistant, auto LED light with afterglow, world time - 29 times zones (48 cities + UTC) with city code display and daylight saving on/off, 4 daily alarms and 1 snooze alarm, hourly time signal, 1/100 second stopwatch (ST1), countdown timer, full auto calendar (pre-programmed until the year 2099), 12/24 hour formats, button operation tone on/off, accuracy: +/-15 seconds per month, approximate 2 years battery life. Protecting the dial is a mineral crystal designed to resist scratches. Powering this fashionable watch is a Japanese made quartz movement.